var pixelRatio =1;
document.write('<meta name="viewport" content="initial-scale='+pixelRatio+',minimum-scale='+pixelRatio+',maximum-scale='+pixelRatio+',user-scalable=no" />');

setRem();
window.addEventListener("orientationchange", setRem);
window.addEventListener("resize", setRem);
function setRem() {
	var html = document.querySelector("html");
	var width = html.getBoundingClientRect().width;
	html.style.fontSize = width / 19.2 + "px";
}


